32161391393 has 2 divisors, whose sum is σ = 32161391394. Its totient is φ = 32161391392.

The previous prime is 32161391387. The next prime is 32161391399. The reversal of 32161391393 is 39319316123.

It is a balanced prime because it is at equal distance from previous prime (32161391387) and next prime (32161391399).

It can be written as a sum of positive squares in only one way, i.e., 26956057489 + 5205333904 = 164183^2 + 72148^2 .

It is a cyclic number.

It is not a de Polignac number, because 32161391393 - 2⁶ = 32161391329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 32161391393.

It is not a weakly prime, because it can be changed into another prime (32161391399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16080695696 + 16080695697.

It is an arithmetic number, because the mean of its divisors is an integer number (16080695697).

Almost surely, 2^32161391393 is an apocalyptic number.

It is an amenable number.

32161391393 is a deficient number, since it is larger than the sum of its proper divisors (1).

32161391393 is an equidigital number, since it uses as much as digits as its factorization.

32161391393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78732, while the sum is 41.

The spelling of 32161391393 in words is "thirty-two billion, one hundred sixty-one million, three hundred ninety-one thousand, three hundred ninety-three".